@PANKAJ31 Thanks for the update. While the supported frequency is not within the range of MR6400. It is suggested to report this to the local India support team for further assistance.

@JerryAtrick Thanks for the update. How about the second test via mobile hotspot? As for the unstable ISP connection, have you tried the beta firmware to fix the 4G bands? [Troubleshooting] LTE keeps...

@Cedar91 Hi, I am afraid yes and currently, the solution would be the beta firmware. The official firmware including the fix of SMS is ready in the plan.

@Sumadi Hi, may I know the model number, hardware as well as firmware version of your 4G router? Some models did not support blocking APPs via parental control.

@Michel64 Hi, here are some suggestions for reference: 1.Change the security mode to be WPA-PSK/WPA2-PSK. 2. Use a more complex wireless password. 3.(Optional)Hide the SSID of M7450.

@Ashik_k Hi, sorry for the delay. I checked from the cloud server and it seemed like you have updated MR400 V4 to the beta firmware already. So is everything going on all right? Thank you very much.